Public bug reported: The Compiz "blur" plugin in 11.10 seems to have been changed in a way so to use vertically mirrored screen image to produce the blurred image.
This affects window shadows, see screenshots at http://askubuntu.com/questions/68926/ugly-shadows-around-applications This also happens with some windows which employ compositing to draw transparent backgrounds. When "alpha_blur" setting of the blur plugin is enabled, this leads to mirrored background. The mirroring doesn't occur when blur plugin is disabled. The mirroring didn't ever happen before 11.10. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: compizconfig-settings-manager 0.9.5.92-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic i686 ApportVersion: 1.23-0ubuntu3 Architecture: i386 Date: Mon Oct 31 15:06:58 2011 ExecutablePath: /usr/bin/ccsm InterpreterPath: /usr/bin/python2.7 PackageArchitecture: all SourcePackage: compizconfig-settings-manager UpgradeStatus: Upgraded to oneiric on 2011-10-22 (8 days ago) ** Affects: compiz (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 oneiric running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/884234 Title: Compiz blur plugin mirrors transparent backgrounds vertically To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/884234/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs